<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Emmet写法</title>
  <style>
    div {
      width: 500px;
      height: 200px;
      background-color: #fff;
    }
  </style>
</head>

<body>
  <p class="" id="box"></p>
  <div class="box"></div>
  <div></div>
  <p></p>

  <div></div>
  <p></p>

  <div>div</div>

  <div>
    <p></p>
  </div>

  <span></span><span></span><span></span>
</body>

</html>